Webster’s Revised Unabridged Dictionary · 1913
Gibberish
Gib′ber·ish (gĭb′bẽr·ĭsh), n. [From Gibber, v. i.] Rapid and inarticulate talk; unintelligible language; unmeaning words; jargon.
He, like a gypsy, oftentimes would go; All kinds of gibberish he had learnt to know. Drayton.
Such gibberish as children may be heard amusing themselves with. Hawthorne.
Gib′ber·ish, a. Unmeaning; as, gibberish language.